129886766 has 16 divisors (see below), whose sum is σ = 213405840. Its totient is φ = 59015040.

The previous prime is 129886753. The next prime is 129886769. The reversal of 129886766 is 667688921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129886769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64880 + ... + 66851.

It is an arithmetic number, because the mean of its divisors is an integer number (13337865).

Almost surely, 2^129886766 is an apocalyptic number.

129886766 is a deficient number, since it is larger than the sum of its proper divisors (83519074).

129886766 is a wasteful number, since it uses less digits than its factorization.

129886766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131779.

The product of its digits is 1741824, while the sum is 53.

The square root of 129886766 is about 11396.7875298261. The cubic root of 129886766 is about 506.4325770159.

The spelling of 129886766 in words is "one hundred twenty-nine million, eight hundred eighty-six thousand, seven hundred sixty-six".